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(No Model.) J A DISTILLATION OP WOOD.

Patented June 17, 1884,.

m Iwwewfiar Jack w C Q YLOC wVbidU wafo mlneaaea Qgrwvw/vLL/vv MLM d/ i t h JEAN A. MATIIIEU, OF DETROIT, hllCllltlAX.

SPECIFICATION forming part of Letters Patent No. 800.38 dated June 1'7, 188%.

Application filed January 12, 1883. ()\'0 model.)

ll? cal/Z- wiz-am 211; may concern:

Be it known that I, J A. lilli'rnrnu, of Detroit, in the county of \Vnyne and State of Michigan, have invented a new and useful linprovement in Process of and Apparatus for Feeding Retorts and Condensing Vapors of Distillation, of which the following is n. specification. I

The drawing is :1 vertical section. My invention relates to ztrnethod of and appurutus for feeding a mass of loose materialsuch as sawdust, bngasse, and other similar material-onto a kiln or retortyi'or the purpose of ccroonizing the some, whereby the vapors resulting from curbonizing the upper portion of the mass of material in the retort are partially condensed by passing such vapors through thciuncnrbo'nizcd ortion of said run"- terinl, substantially as hereinafter shown and described.

M represents a retort such as is shown in u patent granted to me the 8th of October, 1878, No. 208,835, and in an application for Letters Patent filed by me the 23d of December, 1878, the view of said retort being substantially the same as that shown in Figure 1 of sztid application.

O 0 represent pipes, through which hot gases from other retort-s are forced into retort M, passing down through said retort M, and being led out from said retort through the pipe K.

A represents n hopper opening into the lowor end of an inclined shaft or trunk, B.

0 represents a. shaft set in suitable hearings in trunk B, and having thereon screw-knives D. A pulley, c, is attached to the outer end of shaft 0, and is driven by a belt from any convenient source of power.

E represents a chute connecting the upper end of trunk 13 with the lower end, S, of retort M, having in its lower end a. shaft, F, having thereon screw-blades G,-udepted to force any solid matters in chute E into the lower end of the retort. I

f represents a be driven.

W represents a ertical shaft partly within the lower part, S, of retort M, and supported in a step set below the retort. It passesthrough pulley by which shaft-F may a stuffing-box in the lower part of the retort, and carries at its upper end the screwblndes N. Shaft XV may be driven directly, as are shafts O'l or by pulley p, counter-shaft I and bevel-gear m, as shown in the drawings.

* K represents a pipe opening into the lower part, S, of retort M, having its inner end covered with a grating to allow the entrance of gas, but'prevent the entrance of solid bodies. Pipe 1i leads into the upper part of a jacket, V, surrounding trunk 13 for a portion of its length, and from the lower part of said jacket V a. pipe, L, lends to n condenser.

K represents at tight box attached to pipe K, and communicating therewith, as shown in the drawings, and serves to collect any liquid that may enter pipe K. A faucet is attached to boxli' to draw oil the contents thereof.

U represents a pipe lending from the top of trunk B to a condenser.

R and 1 represent faucets by which the liquid contents of chute ll and -trunk i; may be drawn Ofi'.

J represents one of two apertures through which the contents of retort M are removed.

The operation of any invention is as follows: The lower ends of hopper A and chute E are first filled with liquid up to the dotted lines, to form wnter-senlsw Shafts C, F, and V are set in motion, and the sawdust, bngnsse, or other article to be carbonized is then thrown into hopper A. Screw-blndes D on shaft 0 con ey-the sawdust up trunk B, and deliver it in o chute E, whence it is forced by screw G-into the lower part of retort M. Screw N now forces the sawdust up into retort M, and this manner of conveying the sawdust IlQCESSilrily subjects it to considerable pressure, and tends to compact it in blocks. Hot gas is forced through pipes 0 into retort M, as shown in my previous patents, passes down through the sawdustin retort M, thereby cnrbonizing the some, and passes out of the retort through pipe K, the water-seal at the bottom of chute E preventing its entrance into said chute. The gas which passes through pipe K is led into jacket V, and heats trunk B and its contents. From thence it passes through pipe L to a condenser. \Vhen the material operated upon contai s elements which distill at n cornparatively low temperature, these elements are vaporized in trunk B, and pass ofi" through pipe U to a condenser. By removing the cover used to close aperture J the charcoal can be from time to time removed from retort M. \Vhen the hot gas coming through pipes O meets the material to be carbonized in" retort M, it carbonizes the upper portion of said material, and this in turn gives off gas which contains pyroligneous acid and wood-tar. As this gas passes downward through the material in retort M, it gives off aporti on of its heat to said material, and the result is a partial condensation of the pyroligneous acid and wood-tar contained in said gas, which falls to the bottom of the retort and fills the same until the acid can be drawn off through box K, and the woodtar can be drawn off through faucet R. Asthe upper portion of the material in retort M is removed through apertures J as fast as the same is carbonized, and fresh material is constantly supplied by screw N, the operation of carbonization and partial condensation of the resulting vapors is continuous.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. The herein-described method of partially condensing the vapors resulting from carbonizing the upper portion of a mass of material contained in a retort, consisting in passing such vapors through the uncarbonized portion of the material in-said retort.

2. The combination of the screw N with the retort M, chute E, trunk 13, and auxiliary screws D G, substantially as shown and described.

3. The combination of the jacket V and trunk B with the exit-pipe of the retort, whereby a preliminary distillation of the material isefi'ectcd by the hot vaporsissuing from the retort.

4. The combination of the jacketed trunk B, hopper A, chute E, and screw D, substantially as shown and described.

5. The combination of a retort having apipe at or near its top for entry of hot vapor with mechanism for introducing the substance to be distilled at the bottom of the retort, and forcing the same upward as fast as the, distilled solid material is removed from the retort, whereby distillation is effected from above upon a mass of material raised up within the retort to the source of heat.

v JEAN A. MATHIEU. 

